// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-atomics.sub
description: Test Atomics.sub on arrays that allow atomic operations
includes: [testAtomics.js, testTypedArray.js]
features: [ArrayBuffer, Atomics, DataView, SharedArrayBuffer, Symbol, TypedArray]
---*/

function Test() {
    var sab = new SharedArrayBuffer(1024);
    var ab = new ArrayBuffer(16);
    var views = intArrayConstructors.slice();

    testWithTypedArrayConstructors(function(TA) {
      // Make it interesting - use non-zero byteOffsets and non-zero indexes.

      var view = new TA(sab, 32, 20);
      var control = new TA(ab, 0, 2);

      view[8] = 100;
      assert.sameValue(Atomics.sub(view, 8, 10), 100,
        'Atomics.sub(view, 8, 10) returns 100');
      assert.sameValue(view[8], 90, 'The value of view[8] is 90');

      assert.sameValue(Atomics.sub(view, 8, -5), 90,
        'Atomics.sub(view, 8, -5) returns 90');
      assert.sameValue(view[8], 95, 'The value of view[8] is 95');

      view[3] = -5;
      control[0] = -5;
      assert.sameValue(Atomics.sub(view, 3, 0), control[0],
        'Atomics.sub(view, 3, 0) returns the value of `control[0]` (-5)');

      control[0] = 12345;
      view[3] = 12345;
      assert.sameValue(Atomics.sub(view, 3, 0), control[0],
        'Atomics.sub(view, 3, 0) returns the value of `control[0]` (12345)');

      control[0] = 123456789;
      view[3] = 123456789;
      assert.sameValue(Atomics.sub(view, 3, 0), control[0],
        'Atomics.sub(view, 3, 0) returns the value of `control[0]` (123456789)');

      // In-bounds boundary cases for indexing
      testWithAtomicsInBoundsIndices(function(IdxGen) {
        let Idx = IdxGen(view);
        view.fill(0);
        // Atomics.store() computes an index from Idx in the same way as other
        // Atomics operations, not quite like view[Idx].
        Atomics.store(view, Idx, 37);
        assert.sameValue(Atomics.sub(view, Idx, 0), 37, 'Atomics.sub(view, Idx, 0) returns 37');
      });
    }, views);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
